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| author |   Chuck Lever <chuck.lever@oracle.com> | 2019-06-19 10:33:10 -0400 |
|---|---|---|
| committer |   Anna Schumaker <Anna.Schumaker@Netapp.com> | 2019-07-09 10:30:25 -0400 |
| commit | d8099feda4833bab96b1bf312e9e6aad6b771570 (patch) | |
| tree | ec6af94bc83c935b9a7ad96819184990ed97da92 /fs/nfs/callback_proc.c | |
| parent | xprtrdma: Add mechanism to place MRs back on the free list (diff) | |
| download | linux-rng-d8099feda4833bab96b1bf312e9e6aad6b771570.tar.xz linux-rng-d8099feda4833bab96b1bf312e9e6aad6b771570.zip | |
xprtrdma: Reduce context switching due to Local Invalidation
Since commit ba69cd122ece ("xprtrdma: Remove support for FMR memory
registration"), FRWR is the only supported memory registration mode.
We can take advantage of the asynchronous nature of FRWR's LOCAL_INV
Work Requests to get rid of the completion wait by having the
LOCAL_INV completion handler take care of DMA unmapping MRs and
waking the upper layer RPC waiter.
This eliminates two context switches when local invalidation is
necessary. As a side benefit, we will no longer need the per-xprt
deferred completion work queue.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfs/callback_proc.c')
0 files changed, 0 insertions, 0 deletions